Belt-cutting and ripping device



Sept. 8, 1953 M. c. IDE I 2,651,366

BELT CUTTING AND RIPPING DEVICE Filed Aug. 4, 1950 Sept. 8, 1953 DE 2,651,366

BELT CUTTING AND RIPPING DEVICE Filed Aug. 4, 1950 2 Sheets-Sheet 2 T INVENTOR. M4 6T [0E 58 BY 4 r ym-flmvmm- Ar TOE/V573 Patented Sept. 8, 1953 UNITED STATES PATENT OFFICE 2,651,366 BELT-CUTTING AND RIPPING DEVICE Max 0. Ide, Detroit, Mich. Application August 4, 1950, Serial No. 177,716

This invention relates to a cutter, and more particularly to a device for cutting and ripping belts.

An object of this invention is to provide a device which is particularly adapted for cutting a belt longitudinally thereof to subdivide the belt into a plurality of parts having sharp lines of division.

Another object of this invention is to provide a belt cutter which is particularly adapted to maintain belting to be cut in a position wherein an accurate longitudinal or transverse out can be made.

A further object of this invention is to provide a cutter and ripper which can be readily dismantled for cleaning and replacement of the various structural components. A still further object of this invention is to provide a belt-cutting and ripping device which is relatively simple in structure and cheap to manufacture.

The above and still further objects and advantages of the invention will become apparent upon consideration of the following detailed description of the invention, when taken in conjunction with the accompanying drawings, wherein:

Figure 1 is a top plan view of the belt-cutting and ripping device of the present invention;

Figure 2 is a side elevational view, with parts broken away and shown in section, of the beltcutting and rippin device shown in Figure 1;

Figure 3 is an enlarged fragmentary sectional view taken substantially along the line 3-3 of Figure 2;

Figure 4. is an enlarged fragmentary sectional view taken along the line 4-4 of Figure 2; and

Figure 5 is an enlarged fragmentary sectional view taken along the line 5-5 of Figure 1.

Referring now more particularly to the drawings, wherein like reference numerals have been used throughout the several views to designate like parts, there is shown the belt-cutting and ripping device of the present invention, generally designated by the reference numeral III which embodies a base II adapted for securement to a supporting surface I2. As clearly illustrated in Figure 4, the base includes a flat, rectangular plate I3 having legs I4 dependingly supported from each of its corners. The base is fixedly secured to the supporting surface l2 by means of the screws I5 which extend through eachof the corners of the plate I3 and the adjacent one of the legs I4.

Disposed in spaced, parallel relation with respect to each other and secured to the base I I 2 Claims. (01. 16477) is a cutter element 40 are a pair of spaced, upstanding walls I6 and I1. Each of the walls It and I! includes a securing flange I8, I9 which overlies the rectangular plate I3 of the base I I and is secured thereto by means of the bolts, generally designated by the reference numeral 20.

Extending between the upstandin walls I6 and I7 and secured therebetween are a pair of guide rods 2| and 22 which are disposed in overlying spaced relation with respect to each other. Positioned upon the guide rods 2| and 22 is a sliding block 23 which is supported on the guide rods for movement longitudinally thereof between the upstanding walls I6 and I'i.- Extending transversely through the upstanding wall I! is a threaded stop member 24 which is mounted for movement transversely of the wall I'I. Accordingly, the slidin movement of the block 23 toward the upstanding wall II can be limited by selectively varying the disposition of the stop element 24 with respect to the wall.

Disposed transversely of the base II is a shaft 30 which is rotatably supported intermediate its ends in the sliding block 23 and has each of its ends extending beyond the side faces of the block 23, the projecting ends being designated by the reference numerals SI and 32.

Positioned upon the projecting end 3| of the.

shaft 30 is a first abutment plate 33. As clearly illustrated in Figure 4, the projecting end 3| of the shaft 30 is provided with a longitudinally ex tending keyway 34 in which is supported a key 35 of the type generally known as a Woodruff abutment plate 33 is provided with a key ill. further provided with slot 38 for engagement The abutment plate 33 is a transversely extending about the adjacent portion of the key 35 to non-rotatably support the side relation with respect to the abutment plate 33 which is provided with a beveled cutting surface 4! along one face thereof.

therewith. H Disposed in abutting and confronting relation with respect to the cutter element 40 is a second abutment plate 43. The abutment plate 43 is provided with a slot 44 for engagement about the adjacent portion of the key 35 to thereby secure the abutment plate to the shaft 38.

Disposed in side-by-side relation with respect to the cutter element 40 is a belt-engaging roller assembly 45 mounted on the shaft 30 and is frictionally driven thereby. The belt-engaging roller assembly '45 embodies a roller having an annular ring 46 which has its outer periphery knurled, as indicated by the reference numeral '41. Disposed interiorly of the outer ring 56 and secured therein is an inner ring 48 which is fabricated of .rubber, a clutch element secured to said shaft 39 for rotation therewith being interposed within and frictionally engaging the inner ring 43. .Speciflcally, the ring 48 is provided with convergent beveled surfaces 49 and 50 which extend inwardly from the opposed sides thereof toward and terminating in the inner periphery thereof. Positioned on opposite sides of the inner and outer rings 4'8 and 46 are a pair of bearing plates and 52. The bearing plates 51 and 52 have complemental frusto-conical extensions 55, 54 which bear against the beveled surfaces 49 and iii! of the'inner ring 18. The bearing plate 52 is provided with a slot '55 for engagement about the adjacent portion of the key 35 to secure the bearing plate 52 to the-shaft 3B for rotation therewith. The projecting end 3! of the shaft 30 is threaded, as indicated by the reference numeral 56, for the support thereon of a nut El. The nut 51 bears against the adjacent face of the bearing plate 5! to thereby :urge the bearing plate into engagement with the rubber ring it. From the foregoing it is readily apparent that upon effecting the rotary movement of the shaft 39, the abutment plates 33 and 43, cutter element 4t, and the strapengaging roller assembly 45 will be rotated with'the shaft 30. It is to be further noted that the aforementioned assembly of the cutter element 49 and the strap-engaging roller assembly 45 can be dismantled upon removing thenut '51 from the threaded portion 56 of the shaft 30.

As clearly illustrated in Figures 1 and 4, the rectangular plate 13 of the base H is provided with a longitudinally extending slot 69 for the extension therethrough of the adjacent beveled cutting surface H of the cutter element 48. Disposed longitudinally of the base H and secured ito'the other surface thereof is an angle iron 6i which'acts as a reinforcing rib for the portion of the plate l3 of the base H contiguous to the belt engaging roller assembly 65. Circumposed about the upper exposed end of the cutter element 4%! is a protective hood 62 which is detachably secured to the sliding block 23 by means of the threaded bolt 63. As clearly shown in Figure 4, the open side 64 of the hood 62 overlies the belt-engaging roller assembly 45 to thereby form an effective closure for the cutter element 45.

Underlying the projecting end 32 of the shaft 30 and secured longitudinally of the base H is a rack 65 which is provided with a plurality of transversely extending gear teeth 55. Circum- -posed about'the projecting end 32 of the shaft 30 is a pinion 61 which is provided with a plurality of transversely extending gear teeth 68. The teeth 68 of the pinion gear 61 are in meshing engagement with respect to the teeth 56 of the rack 65, and accordingly, upon effecting the rotary movement of the shaft 30, the block 23 will vbe slid longitudinally .of the base i I. As shown in Figure 4, the securement of the pinion gear 81 to the shaft as is effected by means of a pin 69 which extends transversely and the shaft 30.

Slidably supported of the projecting end 32 of the shaft 30 is the hollow open-ended sleeve 10 of the handle 1 i. The securement of the handle H to the shaft 38 is effected by means of a pin 12 which extends transversely through the sleeve 10 of the handle and the shaft 35.

Disposed longitudinally of the base is a cutting gauge 15 which is mounted for movement transversely of the base I I toward and away from the cutter element Ali. Each of the free ends of the cutting gauge 15 is provided with an inwardly extending leg, generally designated by the reference numeral 16, Figure 5, for engagement beneath the adjacent side edge of the base i 1. Contiguous to each of its ends, the cutting gauge 15 is provided with longitudinally spaced, threaded bores, designated generally by the referencenumeral ii, for the support therein of the threaded set screw 18. Upon effecting the engagement-of the set screw it with the adjacent face of the base H, the cutting gauge 15 can be-detachably secured in a select position of its movement with respect to the cutterielement. Overlying the cutting gauge l5 contiguous to one of its .ends is the-stop plate is which is detachably secured to the cutting gauge 15 by means of the bolts which are selectively engageable in the threaded bores Til. :It is to be noted that the positioning of the innermost ones of the bores l! is selected so that the stop plate 79 can be supported contiguous toeither-of the-ends of the cutting gauge it. When cutting, if the movement of the cutter element to is to be toward the wall "i'i, the stop plate #9 is supported in the position indicated in Figure 1. In the event that the cutting operation is to take place toward the wall It, thestop plate is supported contiguous to the other end of the cutting gauge.

Overlying the base H :and supported thereon is a ripping gauge 8!. .Ifhe ripping auge includes an --elongated :plate '82 which is provided with a slot 83 which extends inwardly from-one end thereof and terminates adjacent to and spaced from the-other end thereof The ripping gauge is normally supported by means of the threaded .bolt 8 which extends transversely through the slot '83 and is in threaded engagement with the plate E3 of the 'base ii. Spaced inwardly from the threaded boit .813 transversely of the base I i is a second bolt 85, When the ripping gauge 8-! is to be utilized, the plate 83 is swung to the'position illustrated by the broken line in Figure '1, with the-bolts 3dand '85 received within the 'slot 83. The ripping gauge is then positioned transversely 'of the base for engagement with one-side ofa belt to be out.

In actual use, the belt to be cut is guidingly supported on the base ll by meansof either the cutting gauge 1501 the ripping gauge 35. 'Upon effecting the rotary movement of the shaft '33 the block 23 is moved longitudinallyof the base and simultaneously the cutter element ii and roller assembly 55 are 'rotated'with the shaft :39, the knurledperiphery ll of the annular ring 46 of the roller of thew-roller assembly 65 engaging the adjacent top surfaceof the vbelt and feeding the belt being ,cut by the cutter .element iiil During engagement of the knurled periphery l-l of the roller of the roller assembly :15 withthe-belt to be cut thesaidroller isfrictionally driven by the shaft through the complemental conical through the gear 61 extensions 53 and 54 carried by the bearing plates and 52 respectively and the rubber ring 48 fixedly secured to the interior of said roller, resulting in rotation of the roller of the roller assembly 45 at a rate less than the rate of rotation of the pinion gear 67. Accordingly, belting can be cut longitudinally or transversely to subdivide the belting into a plurality of parts having sharp lines of division. It is readily apparent that the cutting operation is eifected with speed and facility and the belting can be maintained in a position wherein an accurate out can be made.

Although only one embodiment of the beltcutting and rippin device of the present invention has been described, numerous modifications can be made without departing from the spirit of the invention as set forth in the appended claims.

What I claim is:

1. In a belt cutting machine, a base adapted for securement'to a supporting surface, said base having a longitudinally extending slot, a pair of upstanding walls arranged in longitudinal spaced relation on one side of and spaced from said slot and secured to said base, spaced guide rods extending between and secured to said upstanding walls, a block supported on said guide rods for longitudinal sliding movement therealong, a shaft disposed transversely of said base and rotatably supported intermediate its ends in said block, a cutter element disposed on one side of said block inwardly of one end of said shaft and secured to said shaft for rotation therewith, said cutter element being in longitudinal alignment with respect to said slot with a portion of its cutting edge extending through said slot, a belt engaging roller assembly disposed in side by side spaced relation with respect to said cutter element, said assembly includin a roller having an outer ring provided with a knurled surface, an inner resilient ring secured to said outer ring, and a clutch element secured to said shaft for rotation therewith interposed within and frictionally engaging said inner ring, means on the other side of said block extending longitudinally of said base and carried by said base and engageable with means on said shaft for effecting the movement of said block in response to rotary movement of said shaft, and hand actuated means carried by the other end of said shaft for effecting the rotary movement of th latter.

2. In a belt cutting machine, a base adapted for securement to a supporting surface, said base having a longitudinally extending slot, a pair of upstanding walls arranged in longitudinal spaced relation on one side of and spaced from said slot and secured to said base, spaced guide rods extending between and secured to said upstanding walls, a block supported on said guide rods for longitudinal sliding movement therealong, a shaft disposed transversely of said base and rotatably supported intermediate its ends in said block, a cutter element disposed on one side of said block inwardly of one end of said shaft and secured to said shaft for rotation therewith, said cutter element being in longitudinal alignment with respect to said slot with a portion of its cutting edge extending through said slot, a belt engaging roller assembly disposed in side by side spaced relation with respect to said cutter element, said assembly including a roller having an outer ring provided with a knurled surface, an inner resilient ring provided with convergent beveled surfaces secured to said outer ring, and opposed frusto-conical extensions secured to said shaft for rotation therewith interposed between and frictionally engaging the convergent beveled surfaces of said inner ring, means on the other side of said block and secured longitudinally of said base and engageable with means carried by said shaft for effecting the movement of said block in response to the rotary movement of said shaft,

MAX C. IDE.

References Cited in the file of this patent UNITED STATES PATENTS 

